I'm probably asking for something that doesn’t exist, but here goes. Does anyone have any kind of chart or table on primer burn rate, or what ever you call it (how hot the primer is)? Rating primers from hot to cold and the recommended usage, grains of powder or ammo type. The only thing that I have seen is a general rule of thumb is "If the powder charge is over 50 grains then use a Magnum primer".

The reason that I ask is I just ran into a situation reloading in some .300 SAUM ammo. I was using Federal 215M primers and was getting velocities 150 - 200 FPS higher than it was supposed to be and an occasional heavy bolt lift on a mild loads. Talking with people at the range I was told that the Federal 215M was the hottest primer and was to hot for the .300 SAUM. They recommended Winchester WLRM or Remington 9 1/2M primers and start over with my load development.

This email link is to reach site administrators for assistance, if you cannot access TFL via other means. If you are a TFL member and can access TFL, please do not use this link; instead, use the forums (like Questions, Suggestions, and Tech Support) or PM an appropriate mod or admin.

If you are experiencing difficulties posting in the Buy/Sell/Trade subforums of TFL, please read the "sticky" announcement threads at the top of the applicable subforum. If you still feel you are qualified to post in those subforums, please contact "Shane Tuttle" (the mod for that portion of TFL) via Private Message for assistance.

This email contact address is not an "Ask the Firearms Expert" service. Such emails will be ignored. If you have a firearm related question, please register and post it on the forums.